Fedor Mikhailovich Zimmerman's "2 Caprices" are virtuosic Romantic showpieces, demanding significant technical command and interpretive flair. They are characterized by their dynamic range and pianistic brilliance.
Executing rapid octaves and demanding leaps with power and accuracy, while maintaining musicality, presents a significant technical challenge.
2 Caprices is rated Henle level 7 of 9 — late advanced repertoire, roughly ABRSM grade 8 and above. In the RCM system it corresponds to about level 8.
You should be comfortable at Henle level 7 — meaning you can already play level 6–7 pieces cleanly. Learning it one level early is possible as a stretch piece, but more than that usually leads to months of frustration.
A typical performance of 2 Caprices lasts about 7 minutes.
2 Caprices is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.